Power quality assessment studies of grid-connected photovoltaic farms: Impact study in the context of inter harmonic and voltage fluctuation phenomenon
Giordanni S. Troncha1; Henrique J. F. Neto2; Arnaldo J. P. Rosentino Jr3; Ivan N. Santos1
1 Universidade Federal de Uberlândia; 2 CGC Transformadores; 3 Universidade Federal do Triângulo Mineiro
Resumo
This work aims to present the possible effects, in context of voltage fluctuation, caused by the connection of photovoltaic farms at distribution network. So, from MATLAB software, it was modeled an electrical system with 4 photovoltaic systems. By varying the solar irradiance, three case studies were studied in such a way to highlight that inter harmonic components can be produced by the photovoltaic farms. Once the voltage fluctuation is related to the presence of inter harmonics components, such phenomenon also exists. Then, the short-term flicker (Pst index) is analyzed. The results show that depending on the variation of solar irradiance, a high Pst value can be produced by the photovoltaic system.
Palavras-chave: computational analysis; connection study; inter harmonic; photovoltaic system; voltage fluctuation